Changeable copy information display panel means



Jan. 3, 1967 J. J. cHlUMlNATTo 3,295,241

CHANGEABLE COPY INFORMATION DISPLAY PANEL MEANS l Filed Sept. 14, 1964 2 Sheets-Sheet 1 zz 2/7 C; Z4

FIG. 2

I N VENTORL Jan- 3, 1967 J. J. CHIUMINATTO 3,295,241

CHANEABLE COI-Y INFORMATION DISPLAY PANEL MEANS 2 Sheets-Sheet 2 Filed Sept. 14, 1964 i 1 fw FIG FIG.|2

United States jatent 3,295,241 CHAN GEABLE CPY HNFRMATINDISPLAY PANEL MEANS .loseph J. Chiuminattu, 3910 Julie NE., Albuquerque, N. Mex. 87H0 Filed Sept. 14, 11964, Ser. No. 396,237 4 Claims. (Cl. dil- 64) Generally speak-ing, the present invention relates to a chanageable copy information display panel means which, in one preferred exemplary form thereof, also comprises a front cover member for a hospital medical chart holder (although not specifically limited thereto in all forms of the invention), which is particularly well suited for displaying important information with respect to a patient so that it can be seen at a glance from the exterior of t-he front cover of such a `hospital medical chart holder and yet so arranged that any portion of `said display information can be quickly and easily changed as needed. Furthermore, it should be noted that the apparatus of the present invention holds a plurality of informationbearing display surface means in a manner su-ch that they are not likely to become accidentally dislodged and/or lost and such that they can be very quickly and easily either removed and replaced, in the case of certain of them, or rendered visibly observable or visibly non-observable in the case of another type thereof. Additionally, it should be noted that any or all of the information bearing display surface means may be color-coded for various purposes, if desired. For example, one of said information bearing display surface means may bear the name of the physician caring for the particular patient in question, and a particular hospital may employ different colors for different physicians. This will make it possible to very quickly and easily ascertain which hospital medical chart holders are under the supervision of any particular physician regularly using the facilities of that hospital.

Also, it should be noted that, in laddition to the abovementioned advantages, said preferred exemplary form of the invention has at least one information-display means which is of -a special and extremely important type which, when placed in visibly observable relationship, displays very important information which should `be considered first by any nurse examining the chart (or charts) ladapted to be contained Within the chart holder. For example, the important information displayed by said special information -display means might comprise the legend, ,NEW ORDERS, displayed in large leters so that a nurse could not possibly fail to notice this. This would normally alert the nurse to the fact that the regular instructions for that particular patient have now been changed and that some new order, or plurality of new orders is now in effect and can be found by opening the chart holder for observation of the corresponding NEW ORDERS notation therein.

Furthermore, in one form of the arrangement referred t-o in the preceding paragraph, `means is provided for making it difficult for the important information, such as the words, NEW ORDERS, to `be inadvertently covered up until such time as the new orders have been either complied with or have become a regular part of the patients new schedule and are known to the various nurses serving that patient.

The preferred exemplary form of the invention referred to above may have, in addition thereto or as an alternate thereto, a plurality of information display means provided With a corresponding plurality of informationbearing display surface means, at least certain of which (usually all of which) are readily effectively modifiable as to the information displayed thereby, either by selective covering and uncovering thereof or by removal and/ or replacement thereof, and each is adapted to display in a readily visibly observable manner from the outside of the front cover the medical chart holder without the necessity of opening same, various different types of important information. For example, various expressions such as Hold Breakfast, No Visitors, Isol-ation, Daily Prothrombin, and numerous other types of important information may be so displayed from the outside of the front cover Without the `necessity of opening the chart holder as has been necessary in the case of prior art chart holders.

-It should be noted that throughout this application, the invention is described in connection with the preferred exemplary form thereof mentioned hereinabove as comprising a hospital medical chart holder. However, it should be clearly noted that the invention is not specifically so limited and may be used for various other types of chart holders adapted to both carry and externally display various other types of important information relating to other matters. Also, even more broadly speaking, it may be said that the information display panel means of the present invention may be used under circumstances other than as a cover for a chart holder and the description which follows hereinafter is lto be broadly construed in the light of what has just been stated as to the intended scope thereof.

It should be noted that prior art medical chart holders, and chart holders intended for other purposes, conventionally carry all of their information inside of opaque metallic covers with the minor exception of a very small amount of information which may be carried by paper cards or the like mounted in card frames at the top of such a medical chart holder, and in other cases important exterior information is provided by sticking a piece of adhesive tape on the outside of the front cover and making an appropriate notation thereon, usually referring to some item carried on the inside of the opaque covers of the chart holder. In certain cases, a large paper clip or the like may be attached to the opaque metallic cover of such a conventional prior art medical chart holder in order to alert a viewer, such as a nurse or the like, to the fact that important information, such as new orders or the like, is to be found inside of the medical chart holder.

It will be noted that such prior art structures have several disadvantages in that only a very small amount of information can be carried on the paper strips or cards mounted -in the card frames referred to above, plus the fact that the paper strips or cards tend .to become accidentally and inadvertently disengaged from such card frames and lost. Also, a clip used in the prior art manner as mentioned above may similarly become dislodged very easily and a viewer, such as a nurse or the like, of a medical chart holder may be unaware of the fact that important new orders are contained inside of such a prior art opaque medical chart holder.

It is believed to be apparent that the improved apparatus of the present invention completely meets, overcomes, and eliminates all of the above-mentioned prior `art disadvantages since there is no likelihood of any of the information-bearing display means being accidentally lost, and since they can be readily seen from the outside of the front cover of the medical chart holder without the necessity of opening same and further since they can be readily changed if desired and/or rendered effectively visible or non-visible-this latter being particularly with respect to extremely important information such as as NEW ORDERS or the like, as referred to hereinbefore.

With the above points in mind, it is an object of the present invention to provide a novel information-display panel means which may be used in any of a variety of different circumstances, generally speaking, and which, in

J) one preferred exemplary but non-specifically limiting form thereof, may comprise a cover means for a chart holder having the advantages and/or features referred to hereinbefore generically and/or specifically and individually and/ or in combination, and which is of extremely easy-to-use, simple, inexpensive construction adapted for mass manufacture at extremely low cost whereby to be conducive to widespread use thereof.

Further objects are implicit in the detailed description which follows hereinafter (which is to be considered as exemplary of, but not specifically limiting, the present invention), and said objects will be apparent to persons skilled in the art after a careful study of the detailed description which follows hereinafter.

For the purpose of clarifying the nature of the present invention, one exemplary embodiment thereof is illustrated in the hereinbelow-described figures of the accompanying two sheets of drawings and is described in detail hereinafter.

FIG. 1 is a reduced-size, three-dimensional view illustrating one exemplary embodiment of the invention wherein it takes the preferred exemplary, but non-specifically limiting, form referred to hereinbefore as comprising the cover member of a hospital medical chart holder.

FIG. 2 is an enlarged fragmentary sectional view, taken substantially along the plane indicated by the arrows 2 2 of FIG. 1.

FIG. 3 is an enlarged fragmentary sectional view taken substantially along the plane indicated by the arrows 3 3 of FIG. l.

FIG. 4 is an enlarged fragmentary top plan View of one of the pair of biasing torsion spring means carried by the hinge means joining the front cover member to the rear member of the hospital medical chart holder of FIGS. 1-3 and is also exemplary of the other of said biasing torsion spring means which is not individually illustrated in enlarged detail as shown in FIG. 4.

FIG. 5 is a greatly enlarged fragmentary sectional view of the portion of the apparatus lying within the circle designated at 5 in FIG. 3.

FIG. `6 is a fragmentary top plan View such as indicated by the arrows 6-6 of FIG. 5, of a greatly enlarged portion of a typical exemplary one of the plurality of information-bearing display surface means of the corresponding plurality of information display means of the exemplary form of the Lapparatus illustrated.

FIG. 7 is an enlarged cross-sectional View, taken substantially along the plane indicated by the arrows 7-7 of FIG. 1.

FIG. 8 is a fragmentary partly broken away top View, partly in top plan elevation and fragmentarily in section, taken substantially along the plane indicated by the arrows 8-8 of FIG. 7.

FIG. 9 is an enlarged fragmentary sectional view, taken substantially along the plane indicated by the arrows 9-9 of FIG. l, and illustrates an exemplary one of eight similar information display means shown in FIG. 1 and is exemplary of `all of the other seven thereof in addition to lthe specific one illustrated.

FIG. l0 is another enlarged fragmentary sectional View, at right angles to FIG. 9, taken substantially along the plane indicated by the arrows 10-10 of FIG. l and further illustrates the detail of the exemplary one of the eight similar information-display means, all of which are substantially similar.

FIG. 1l is an enlarged fragmentary view, partly in section and partly in elevation, taken substantially along the plane indicated by the arrows 11-11 of FIG. 8 and illustrates the detail of the exemplary form of safety latch means for immobilizing the slide shutter member when in an uncovered relationship with respect to the information-bearing display surface means positioned under said shutter member when in the closed or covering relationship shown in FIGS. 1, 7, and 8.

FIG. 12 is a greatly enlarged fragmentary sectional 4 view of the portion of the apparatus lying within the circle designated at 12 in FIG. 10.

Generally speaking, the exemplary form of the invention illustrated comprises a display panel, such as is generally indicated at 21 in FIG. 1, which is shown as being of substantially rectangular shape, although not specifically so limited in all forms of the invention, and which is shown as comprising a front cover member lfor a hospital medical chart holder, which is generally designated by the reference numeral 22.

As illustrated, said medical chart holder 22 includes a rectangular rigid back panel member 23 hingedly connected by hinge means 2d at the top end thereof with respect to the previously mentioned substantially rectangular display panel 21, which comprises the present invention.

It will be noted that the reference numeral 24 designates a piano type hinge means wherein every other loop member 24A is integral with and formed out of the material of the rigid back panel member 23 and is looped around the transverse hinge rod member 25, with the intervening alternately arranged loop members 24B being integral with respect to the top edge or end of the front cover member or display panel 21 and also being mounted on said transverse hinge rod member 25. This provides a piano hinge arrangement which is normally biased to closed position by a pair of torsion biasing spring means 26, each of which is mounted on a portion of the transverse hinge rod 25 between adjacent hinge loop members 24A and 24B and has opposite ends 26E effectively forcibly engaged with respect to the top of upper panel portion 21T of the combination display panel and front cover 21 and the rear surface of the rigid back panel member 23 as is best shown in FIG. 2, whereby to force same together for the positive but controllably removable retention therebetween of a medical chart comprising one or more papers containing instructions relative to the treatment of a particular patient, or the like. Outer ends of the transverse hinge rod 25 may be provided with rubber or plastic bumper elements 27 which minimize any likelihood of injury or damage resulting from inadvertent contact therewith.

The exemplary combination display panel and chart holder front cover 21 includes two portions comprising the previously mentioned upper panel portion 21T and another lower or bottom substantially rectangular panel portion 21B hingedly interconnected by another longitudinal hinge means, indicated generally at 28, which is of construction substantially similar to the previously described one designated by the reference numerals 24 having alternately arranged loop portions 28A and 28B connected respectively to the top panel portion 21T and the bottom panel portion 21B and each rotatively mounted on a horizontal rod 28R in a manner substantially identical to that described in connection with the elements 24A, 24B and 25, of the previously described hinge means 24. Therefore, the hinge means 28 will not be described in detail since such would be redundant.

It will be noted that both the top panel portion 21T and the bottom panel portion 21B of the complete display panel 21 are provided with a plurality of frontally facing or outwardly facing information display means, each comprising a recess-defining means forming a recess within a corresponding part of said display panel portion and positioned entirely between front and rear surface planes thereof and substantially coplanar with respect thereto and having an access opening thereinto. Also, the recess-defining means of each of said information display means has a front or outwardly facing effectively transparent viewing window means immediately in front of or outwardly positioned with respect to the corresponding recess defined thereby. Additionally, each of said information display means may be said to comprise a visibly observable information-bearing display surface means positioned and/ or positionable entirely within the 5 corresponding recess behind the corresponding effectively transparent viewing window means in a frontally unobstructed and visibly observable manner, and additionally includes controllably manually movable means adapted to be controllably manually moved for effectively causing the information-bearing display surface means to be effectively removed from front View through said effectively transparent viewing window means.

In the exemplary form of the invention illustrated, the plurality of information display means generally referred to in the preceding paragraph are of tWo different types and, therefore, the first exemplary type thereof, of which there are eleven shown in FIG. 1, is -in each case designated generally by the reference character 29A, while the second type thereof, of which there is only one illustrated in the exemplary form of the invention, is generally designated by the reference character 29B. However, it should be clearly understood that both of the reference characters 29A and 29B may be said to generally designate such information display means as referred to broadly above in the preceding paragraph.

The first-mentioned type of information display means generally designated by the reference character 29A will now be described in connection with the upper right hand one thereof illustrated in FIG. 1 as being carried by the cover panel portion 21B, although it should be understood that nine of the remainder thereof are identical in construction, although the left five thereof are obviously positionally reversed, and that the final remaining one thereof carried at the center of the cover panel portion 21T is similar although having its access opening 32A at the top edge thereof instead of at the side edge thereof. In this connection 4it should be noted that the information display means 29A comprises a recess-defining means 31A formed between a rear ply or layer 21 and a front ply or layer 21, which are rigidly joined together by any suitable means and which together comprise the bottom panel portion 21B and also the top panel portion 21T of the complete front cover and display panel 21. In the example illustrated in FIGS. 9, l and 12, this is done by recessing the front face of said rear ply 21' before it is rigidly joined to the front ply 21 of the bottom panel portion 21B of the complete front cover and display panel 21. However, in the example illustrated in FIGS. 3 and 5, the recess 31A is formed in the back of the front ply 21". Thus, the recess 31A has an edge access opening 32A thereinto (best shown in FIG. 10) for purposes which will be described in greater detail hereinafter.

Also, it should be noted that the above-mentioned effectively transparent viewing window means comprises that portion of the front ply 21", indicated at 33A, which lies directly in front of the recess 31A. This is so because at least said portion of said front ply 21" is rnade of transparent material, such as the type of plastic cornmonly known as Lucite 'or Plexiglas, which is an acrylic resin material. However, various other transparent materials may be employed in lieu thereof and the transparent nature of the material may be coextensive with the entire front ply 21 rather than just with the viewing portion 33A thereof in certain forms of the invention. This facilitates construction of the invention, in the manner illustrated in the drawings since it makes it possible for the front ply or layer 21 to comprise two sheets of such transparent material rather than two opaque sheets provided with eleven transparent viewing W-indow portions each similar to Vthe exemplary one shown in detail at 33A in FIGS. 9, l0 and 12.

Each of said rst type of information display means, such as designated by the reference character 29A, and best illustrated in FIGS. 9, 10 and 12 (also in FIGS. 3 and 5), also includes one specific type of the above generally referred to information-bearing display surface means, as indicated by the reference character 34A (best shown in FIG. 12, also in FIG. 5), which is adapted to be positioned behind the corresponding transparent viewd ing window means, such as shown in detail at 33A in FIGS. 9, 10 and 12, also in FIG. 5, so that it can be viewed therethrough from the front or outside of the front cover member and display panel 21 with-out the necessity of opening same.

In the exemplary first type of information display means generally designated at 29A, the above-mentioned controllably manually movable means adapted to be controllably manually moved for rendering the information-bearing display surface means 34A either effectively visible or invisible through the transparent viewing window means 33A, takes one specific form wherein it comprises a thinsheet slide member 35A of a size and shape similar to the recess 31A for slidable movement thereinto and thereout of by way of the edge access opening 32A and having the information-bearing display surface means 34A mounted on the front surface thereof. In the exemplary form `best illustrated 4in FIGS. 9, 10 and l2, also in FIG. 5, it will be noted that the information-bearing display surface means 34A actually comprises a thin-sheet material cemented or otherwise mounted (either controllably removably or non-removably) on the front surface of the slide member 35A and bearing visibly observable indicia markings, such as those diagrammatically illustrated at 36A in FIG. 1, on the front surface thereo-f for viewing through the transparent viewing window means 33A. Also, in the exemplary form thereof best illustrated in FIGS. 9, 10 and 12, also in FIG. 5, it will be noted that the outer end of each slide member 35A is provided with a fnger-engageable tab 37A which normally projects slightly outwardly with respect to the edge access opening 32A for convenient finger access to allow any of the particular `slide members, such as shown at 35A, to be readily removed from the corresponding recess 31A so that it can either be replaced with a different slide member having a different information-bearing display surface means 34A displaying a different important piece of information by visible markings similar to those shown at 315A in FIG. l or so that the strip or layer material comprising said information-bearing display means 34A can be removed from the slide member 35A and replaced with another bearing different information markings, before replacement of the slide member 35A in the recess 31A.

It should be noted that the thin-sheet displaysurface means 34A may be preprinted with various different important pieces of information or, in certain cases, may have an outer surface adapted to be Written upon or hand printed upon so that a nurse may prepare her own information markings thereon. This is also true with respect to the corresponding surface means 34B shown in FIGS. 7 and 8, which is illustrated as being formed right on the rear surface of the corresponding recess 31B and nonremovable with respect thereto. However, said surface means 34B may, if desired, be of the type shown at 34A, 0r vice versa.

It should be noted that all of said illustrated first-mentioned type of information display -means are similar to the one illustrated in detail in FIGS. 9, 10 and l2 (or the one illustrated in FIGS. 3 and 5), and they are designated by corresponding reference characters.

It should be noted that the second type of information display means referred to generally hereinbefore and generally designated by the reference character 29B is best illustrated in FIGS. 1, 7 and 8, and includes .a portion deining or forming a recess 31B therein which actually is very similar to previously described recess 31A of the rst form of the information display means 29A as clearly illustrated in FIGS. 9, 10 and 12. In this connection, it will 'be noted that said recess 31B is formed `in or defined in the front face of the rear ply or layer 21' of the two-ply or two-layer bottom portion 21B of the complete front cover or display panel member 21 and has an access opening 32B thereinto and slidably mounts a slide shutter member 35B therein for movement between the leftward extreme position shown in FIGS. l, 7 and 8 and a rightward extreme position at the extreme right end of the recess 31B as will be best understood from careful examination of said recess 31B in FIG. 7.

It will be noted that, in this form of the information display means 29B, the information-bearing display surface means 311B .is fixe'dly mounted directly `on the front surface of the rear wall of the recess 31B immediately behind the opaque slide shutter member 35B so that when the slide shutter -member 35B is in the vision-obscuring covering position shown in FIGS. 1, 7 and 8, said information display surface means 35B and the information markings, such as those shown at 36B in broken lines in FIG. 8, are obscured and cannot be seen by a viewer looking through the transparent viewing window means 33B from the front or outside of the cover and display panel member 21. In other words, when said shutter member 35B is in the relationship shown in FIGS. l, 7 and 8 the legend, NEW ORDERS, cannot be seen by a viewer. However, when the operating knob or projection 37B is manually grasped and is moved toward the right from the position shown in FIGS. 1, 7 and 8, until it lies within the notch 3S (best shown in FIG. l), the opaque slide shutter member 35B will be at its extreme rightward position in which might be termed an uncovering position relative to the information-bearing display surface means 34B so that it can be viewed directly through the transparent viewing window means 33B, which, in this form of the information display means 29B, merely comprises an opening, which is slightly smaller than the slide shutter member 35B.

Once the slide shutter means 35B has been moved toward the right in the manner just described to display the legend, NEW ORDERS, indicated at 36B, a controllably manually unlockable or releasable safety latch means, generally designated at 39, cooperates with said slide shutter means by way of a notched receiver 4l for immobilizing said slide shutter means 35B and preventing it from being returned to its former closing position, as shown in FIGS. 1, 7 and 8, until such time as a manually operable release knob 42 moves the slide catch member 43 against the biasing compression coil spring 44 to a degree such as to disengage said catch member 43 from the notched receiver 41 so as to allow leftward movement of the slide shutter means 35B to be effected by applying leftward force to the handle or knob 37B.

It should be noted that the top panel portion 21T car- `ries three of said first-mentioned type of information display means, two of which are substantially identical to the ones specifically illustrated in FIGS. 9, l and 12, and described in detail hereinbefore, and the third of which is very similar thereto with the exception of the fact that the edge access opening 32A thereinto vis at the top of the top panel portion 21T as is best shown in FIG. 3. In view Of the similarity of these three information display means to the one illustrated in detail in FIGS. 9, 10 and 12, and previously described in detail, all three of said information display means are also designated -by the reference character 29A. It should be noted that normally these three information display means may be adapted to display information as to the patients name, the physicians name, and the patients room number. However, this is illustrative and exemplary only and is not to be construed as so llimiting the invention.

It should be noted that the two-ply construction of the front display panel or cover member 21, as illustrated in detail in the figures of the drawings, is not to be construed as specially limiting the invention thereto. Various other modes of construction may be employed for accomplishing substantially the same result. Also, the composition `of said front cover member and/or display panel 21 may be modified substantially within the broad scope of the present invention. This is also t-rue with respect to the slide members 35A and the slide shutter member 35B and to the specific type of latching means generally designated at 39, all of which may -be modified substantially within the broad spirit, scope, and teachings of the present invention.

Additionally, it should be noted that the detailed construction of the two hinge means 24 and 28 and also the material of the back member 2.3 may be modified. Indeed, in some forms of the invention, metal may be employed for all, or various portions, of the apparatus with the exception of the transparent viewing window means such as shown at 33A (and/ or 33B).

It should be understood that the figures and the specific description thereof set forth in this application are for the purpose of illustrating the present invention and are not to be construed as limiting the present invention to the precise and detailed specific structure shown in the figures and specifically described hereinbefore. Rather, the real invention is intended to include substantially equivalent Constructions embodying the basic teachings and inventive concept of the present invention.

I claim:

1. A changeable copy information display panel provided with a plurality of outwardly facing information display means, each comprising a recess-defining means forming a recess within a corresponding part of said display panel positioned entirely `between front and rear surface planes thereof and substantially coplanar with respect thereto, each of said recess-defining means having an outwardly facing effectively transparent viewing window means immediately outwardly of the corresponding recess defined thereby, each of said information display means also comprising visibly observable information-bearing display surface means positionable within the corresponding recess behind the corresponding effectively transparent viewing window means in a frontally unobscured and visibly observable manner and including controllably manually movable means adapted to be controllably manually moved for effectively removing said information-bearing display surface means from front view through said effectively transparent viewing window means at least certain of said controllably manually movable means each comprising a thin-sheet slide member of a size and shape similar to the corresponding recess for slidable movement thereinto and thereout of and having said informationybearing display surface means on the front thereof, at least one of said controllably manually movable means comprising a thin-sheet opaque slide shutter member of a shape similar to but smaller in one direction than the corresponding recess for slidable vision-obscuring movement into a covering position in front of the corresponding information-bearing display surface means and for slidable movement out of said covering position and into an uncovering position relative to said display surface means, and including controllably manually unlockable and releasable one-direction-effective safety latch means cooperable with respect to Said slide shutter member for immobilizing it when in said uncovering position by positively preventing movement of said slide shutter member toward said covering position, said safety latch means being cooperable with respect to said slide shutter member for freely allowing movement of said slide shutter member from said covering position toward and into said uncovering position and said subsequent immobilization thereof and prevention of reverse movement toward said covering position, and an outwardly projecting manually accessible operating member coupled with respect to said safety latch means for manually operating said safety latch means for effectively unlocking same with respect to said slide shutter member.

2. A device as defined in claim 1l, wherein said display panel takes the form of and comprises a front cover member for a chart holder. v

3. A device as defined in claim ll, wherein said display panel takes the form of and comprises a front covei member for a chart holder and includes at least two effectively hingedly interconnected substantially rigid panel portions.

4. A device as defined in claim 1, wherein said display 9 panel takes the form of and comprises a substantially rectangular front cover member for a hospital medical chart holder and includes a substantially rigid top substantially rectangular panel portion, a substantially rigid bottom substantially rectangular panel portion, and longitudinal hinge means hingedly interconnecting said panel portions 'along a transverse-ly direction longitudinal hinge line.

References Cited by the Examiner UNITED STATES PATENTS 119,180 9/1871 Read et al. 292-176 X Van Gelder 4-0-64 Hager 40-64 Draa et al. 292-1 X Lacoursiere 40-63 X Fuller 40-64 X Anderson 40-65 X EUGENE R. CAPOZIO, Primary Examiner. 10 W. GRIEG, Assistant Examiner, 

1. A CHANGEABLE COPY INFORMATION DISPLAY PANEL PROVIDED WITH A PLURALITY OF OUTWARDLY FACING INFORMATION DISPLAY MEANS, EACH COMPRISING A RECESS-DEFINING MEANS FORMING A RECESS WITHIN A CORRESPONDING PART OF SAID DISPLAY PANEL POSITIONED ENTIRELY BETWEEN FRONT AND REAR SURFACE PLANES THEREOF AND SUBSTANTIALLY COPLANAR WITH RESPECT THERETO, EACH OF SAID RECESS-DEFINING MEANS HAVING AN OUTWARDLY FACING EFFECTIVELY TRANSPARENT VIEWING WINDOW MEANS IMMEDIATELY OUTWARDLY OF THE CORRESPONDING RECESS DEFINED THEREBY, EACH OF SAID INFORMATION DISPLAY MEANS ALSO COMPRISING VISIBLY OBSERVABLE INFORMATION-BEARING DISPLAY SURFACE MEANS POSITIONABLE WITHIN THE CORRESPONDING RECESS BEHIND THE CORRESPONDING EFFECTIVELY TRANSPARENT VIEWING WINDOW MEANS IN A FRONTALLY UNOBSCURED AND VISIBLY OBSERVABLE MANNER AND INCLUDING CONTROLLABLY MANUALLY MOVABLE MEANS ADAPTED TO BE CONTROLLABLY MANUALLY MOVED FOR EFFECTIVELY REMOVING SAID INFORMATION-BEARING DISPLAY SURFACE MEANS FROM FRONT VIEW THROUGH SAID EFFECTIVELY TRANSPARENT VIEWING WINDOW MEANS AT LEAST CERTAIN OF SAID CONTROLLABLY MANUALLY MOVABLE MEANS EACH COMPRISING A THIN-SHEET SLIDE MEMBER OF A SIZE AND SHAPE SIMILAR TO THE CORRESPONDING RECESS FOR SLIDABLE MOVEMENT THEREINTO AND THEREOUT OF AND HAVING SAID INFORMATIONBEARING DISPLAY SURFACE MEANS ON THE FRONT THEREOF, AT LEAST ONE OF SAIDCONTROLLABLY MANUALLY MOVABLE MEANS COMPRISING A THIN-SHEET OPAQUE SLIDE SHUTTER MEMBER OF A SHAPE SIMILAR TO BUT SMALLER IN ONE DIRECTION THAN THE CORRESPONDING RECESS FOR SLIDABLE VISION-OBSCURING MOVEMENT INTO A COVERING POSITION IN FRONT OF THE CORRESPONDING INFORMATION-BEARING DISPLAY SURFACE MEANS AND FOR SLIDABLE MOVEMENT OUT OF SAID COVERING POSITION AND INTO AN UNCOVERING POSITION RELATIVE TO SAID DISPLAY SURFACE MEANS, AND INCLUDING CONTROLLABLY MANUALLY UNLOCKABLE AND RELEASABLE ONE-DIRECTION-EFFECTIVE SAFETY LATCH MEANS COOPERABLE WITH RESPECT TO SAID SLIDE SHUTTER MEMBER FOR IMMOBILIZING IT WHEN IN SAID UNCOVERING POSITION BY POSITIVELY PREVENTING MOVEMENT OF SAID SLIDE SHUTTER MEMBER TOWARD SAID COVERING POSITION, SAID SAFETY LATCH MEANS BEING COOPERABLE WITH RESPECT TO SAID SLIDE SHUTTER MEMBER FOR FREELY ALLOWING MOVEMENT OF SAID SLIDE SHUTTER MEMBER FROM SAID COVERING POSITION TOWARD AND INTO SAID UNCOVERING POSITION AND SAID SUBSEQUENT IMMOBILIZATION THEREOF AND PREVENTION OF REVERSE MOVEMENT TOWARD SAID COVERING POSITION, AND AN OUTWARDLY PROJECTING MANUALLY ACCESSIBLE OPERATING MEMBER COUPLED WITH RESPECT TO SAID SAFETY LATCH MEANS FOR MANUALLY OPERATING SAID SAFETY LATCH MEANS FOR EFFECTIVELY UNLOCKING SAME WITH RESPECT TO SAID SLIDE SHUTTER MEMBER. 